ASTROSAT CZTI

Data Quality Report

Orbit 31474

Creation date: 2024-06-27T20:28:59.844311
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T04_029T01_9000004582_31474cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31474cztM0_level2_quad_clean.evt
Size (bytes)257,333,76033,491,520
Size245.4 MB 31.9 MB
Events in quadrant A1,717,920208,257
Events in quadrant B2,299,244176,540
Events in quadrant C1,751,317202,668
Events in quadrant D1,801,361195,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182128
B0182125
C0182106
D0184110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042
B042
C031
D042

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01848811304
B02687618101
C01871211467
D02022912707

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34191343.919275%
B28602017.027972%
C34001705.000000%
D33031133.421132%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9184 4344 0 0 0.00% 0.00%
B 9184 3671 0 0 0.00% 0.00%
C 9185 4331 0 0 0.00% 0.00%
D 9185 4255 2 2 0.02% 0.05%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 5519 54.51 444 432 93.3
A 3 137 5028 49.25 444 432 93.3
A 0 226 3725 35.29 444 432 93.3
B 6 159 834471 11389.87 364 354 73.2
B 4 80 20555 275.84 364 354 73.2
B 12 111 9639 126.79 364 354 73.2
C 14 238 65533 651.93 418 420 99.9
C 10 22 21023 206.28 418 420 99.9
C 0 10 13238 128.34 418 420 99.9
D 8 195 235439 2352.08 411 400 99.9
D 2 234 13393 130.02 411 400 99.9
D 12 218 4340 39.43 411 400 99.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter